JPWO2017130821A1 - 二次電池及びその製造方法 - Google Patents
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Abstract
Description
図1は、本発明の実施形態1に係る二次電池100の外観斜視図である。図2は、図1に示す二次電池100の分解斜視図である。
次に、図1から図3及び図5から図11を援用し、図12を用いて本発明の二次電池及びその製造方法の実施形態2を説明する。図12は、本発明の実施形態2に係る二次電池の図4に相当する模式的な断面図である。
31a 金属箔
31b 合剤層
31c 箔露出部
31f 平坦部
31t テーパ部
32 負極
32a 金属箔
32b 合剤層
32c 箔露出部
32f 平坦部
32t テーパ部
33 セパレータ
34 セパレータ
35 絶縁層
100 二次電池
L 積層方向
Claims (9)
- 正極と負極とがセパレータを介在させて捲回された二次電池であって、
前記正極及び前記負極は、それぞれ金属箔と該金属箔上に形成された合剤層とを有するとともに幅方向の一側に前記金属箔が露出した箔露出部を有し、
前記正極又は前記負極は、前記合剤層を覆う絶縁層を有するとともに前記箔露出部に隣接して前記箔露出部へ向けて厚さが漸次薄くなる前記合剤層のテーパ部の先端が前記絶縁層から露出することを特徴とする二次電池。 - 前記合剤層及び前記絶縁層は、前記金属箔の表裏に形成され、
前記テーパ部の先端は、前記金属箔の表裏で前記絶縁層から露出することを特徴とする請求項1に記載の二次電池。 - 前記合剤層及び前記絶縁層は、前記金属箔の表裏に形成され、
前記テーパ部の先端は、前記金属箔の表裏のいずれか一方で前記絶縁層から露出することを特徴とする請求項1に記載の二次電池。 - 前記負極が前記絶縁層を有することを特徴とする請求項2又は請求項3に記載の二次電池。
- 前記正極の前記合剤層は、前記正極と前記負極との積層方向において前記絶縁層に対向する範囲内に設けられることを特徴とする請求項4に記載の二次電池。
- 前記正極の前記合剤層は、前記積層方向において前記絶縁層を介して前記負極の前記テーパ部の一部に対向することを特徴とする請求項5に記載の二次電池。
- 前記負極の前記合剤層は、厚さが均一な平坦部を有し、
前記正極の前記合剤層は、前記絶縁層を介して前記負極の前記平坦部に対向することを特徴とする請求項5に記載の二次電池。 - 前記正極が前記絶縁層を有することを特徴とする請求項2又は請求項3に記載の二次電池。
- 金属箔上に合剤層を形成するとともに該金属箔の幅方向の一側を露出させて箔露出部を形成して正極及び負極を作製する工程と、
前記正極又は前記負極の前記合剤層を覆う絶縁層を形成するとともに前記箔露出部に隣接して前記箔露出部へ向けて厚さが漸次薄くなる前記合剤層のテーパ部の先端を前記絶縁層から露出させる工程と、
前記正極と前記負極とをセパレータを介在させて捲回する工程と、を有することを特徴とする二次電池の製造方法。
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JP2016013716 | 2016-01-27 | ||
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PCT/JP2017/001594 WO2017130821A1 (ja) | 2016-01-27 | 2017-01-18 | 二次電池及びその製造方法 |
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CN208173722U (zh) * | 2017-08-24 | 2018-11-30 | 日立汽车系统株式会社 | 二次电池 |
CN108923016A (zh) * | 2018-06-11 | 2018-11-30 | 合肥国轩高科动力能源有限公司 | 一种多孔集流体涂布方法 |
JP2020119887A (ja) * | 2019-01-25 | 2020-08-06 | 株式会社リコー | 電極及びその製造方法、電極素子、電気化学素子 |
JP7408297B2 (ja) * | 2019-05-29 | 2024-01-05 | 株式会社Aescジャパン | リチウムイオン二次電池素子、リチウムイオン二次電池およびリチウムイオン二次電池素子を製造する方法 |
JP7354044B2 (ja) * | 2020-03-31 | 2023-10-02 | プライムアースEvエナジー株式会社 | 二次電池及び二次電池の製造方法 |
CN115413381A (zh) * | 2020-12-03 | 2022-11-29 | 株式会社Lg新能源 | 绝缘涂布覆盖控制系统和绝缘涂布覆盖控制方法 |
JP7446271B2 (ja) * | 2021-11-29 | 2024-03-08 | プライムプラネットエナジー&ソリューションズ株式会社 | 非水電解質二次電池 |
WO2024101842A1 (ko) * | 2022-11-11 | 2024-05-16 | 삼성전자 주식회사 | 배터리 및 배터리를 포함하는 전자 장치 |
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